graphql/type/schema.mjs

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

import find from "../polyfills/find.mjs";
import arrayFrom from "../polyfills/arrayFrom.mjs";
import objectValues from "../polyfills/objectValues.mjs";
import { SYMBOL_TO_STRING_TAG } from "../polyfills/symbols.mjs";
import inspect from "../jsutils/inspect.mjs";
import toObjMap from "../jsutils/toObjMap.mjs";
import devAssert from "../jsutils/devAssert.mjs";
import instanceOf from "../jsutils/instanceOf.mjs";
import isObjectLike from "../jsutils/isObjectLike.mjs";
import { __Schema } from "./introspection.mjs";
import { GraphQLDirective, isDirective, specifiedDirectives } from "./directives.mjs";
import { isObjectType, isInterfaceType, isUnionType, isInputObjectType, getNamedType } from "./definition.mjs";
/**
 * Test if the given value is a GraphQL schema.
 */

// eslint-disable-next-line no-redeclare
export function isSchema(schema) {
  return instanceOf(schema, GraphQLSchema);
}
export function assertSchema(schema) {
  if (!isSchema(schema)) {
    throw new Error("Expected ".concat(inspect(schema), " to be a GraphQL schema."));
  }

  return schema;
}
/**
 * Schema Definition
 *
 * A Schema is created by supplying the root types of each type of operation,
 * query and mutation (optional). A schema definition is then supplied to the
 * validator and executor.
 *
 * Example:
 *
 *     const MyAppSchema = new GraphQLSchema({
 *       query: MyAppQueryRootType,
 *       mutation: MyAppMutationRootType,
 *     })
 *
 * Note: When the schema is constructed, by default only the types that are
 * reachable by traversing the root types are included, other types must be
 * explicitly referenced.
 *
 * Example:
 *
 *     const characterInterface = new GraphQLInterfaceType({
 *       name: 'Character',
 *       ...
 *     });
 *
 *     const humanType = new GraphQLObjectType({
 *       name: 'Human',
 *       interfaces: [characterInterface],
 *       ...
 *     });
 *
 *     const droidType = new GraphQLObjectType({
 *       name: 'Droid',
 *       interfaces: [characterInterface],
 *       ...
 *     });
 *
 *     const schema = new GraphQLSchema({
 *       query: new GraphQLObjectType({
 *         name: 'Query',
 *         fields: {
 *           hero: { type: characterInterface, ... },
 *         }
 *       }),
 *       ...
 *       // Since this schema references only the `Character` interface it's
 *       // necessary to explicitly list the types that implement it if
 *       // you want them to be included in the final schema.
 *       types: [humanType, droidType],
 *     })
 *
 * Note: If an array of `directives` are provided to GraphQLSchema, that will be
 * the exact list of directives represented and allowed. If `directives` is not
 * provided then a default set of the specified directives (e.g. @include and
 * @skip) will be used. If you wish to provide *additional* directives to these
 * specified directives, you must explicitly declare them. Example:
 *
 *     const MyAppSchema = new GraphQLSchema({
 *       ...
 *       directives: specifiedDirectives.concat([ myCustomDirective ]),
 *     })
 *
 */

export var GraphQLSchema = /*#__PURE__*/function () {
  // Used as a cache for validateSchema().
  function GraphQLSchema(config) {
    var _config$directives;

    // If this schema was built from a source known to be valid, then it may be
    // marked with assumeValid to avoid an additional type system validation.
    this.__validationErrors = config.assumeValid === true ? [] : undefined; // Check for common mistakes during construction to produce early errors.

    isObjectLike(config) || devAssert(0, 'Must provide configuration object.');
    !config.types || Array.isArray(config.types) || devAssert(0, "\"types\" must be Array if provided but got: ".concat(inspect(config.types), "."));
    !config.directives || Array.isArray(config.directives) || devAssert(0, '"directives" must be Array if provided but got: ' + "".concat(inspect(config.directives), "."));
    this.description = config.description;
    this.extensions = config.extensions && toObjMap(config.extensions);
    this.astNode = config.astNode;
    this.extensionASTNodes = config.extensionASTNodes;
    this._queryType = config.query;
    this._mutationType = config.mutation;
    this._subscriptionType = config.subscription; // Provide specified directives (e.g. @include and @skip) by default.

    this._directives = (_config$directives = config.directives) !== null && _config$directives !== void 0 ? _config$directives : specifiedDirectives; // To preserve order of user-provided types, we add first to add them to
    // the set of "collected" types, so `collectReferencedTypes` ignore them.

    var allReferencedTypes = new Set(config.types);

    if (config.types != null) {
      for (var _i2 = 0, _config$types2 = config.types; _i2 < _config$types2.length; _i2++) {
        var type = _config$types2[_i2];
        // When we ready to process this type, we remove it from "collected" types
        // and then add it together with all dependent types in the correct position.
        allReferencedTypes.delete(type);
        collectReferencedTypes(type, allReferencedTypes);
      }
    }

    if (this._queryType != null) {
      collectReferencedTypes(this._queryType, allReferencedTypes);
    }

    if (this._mutationType != null) {
      collectReferencedTypes(this._mutationType, allReferencedTypes);
    }

    if (this._subscriptionType != null) {
      collectReferencedTypes(this._subscriptionType, allReferencedTypes);
    }

    for (var _i4 = 0, _this$_directives2 = this._directives; _i4 < _this$_directives2.length; _i4++) {
      var directive = _this$_directives2[_i4];

      // Directives are not validated until validateSchema() is called.
      if (isDirective(directive)) {
        for (var _i6 = 0, _directive$args2 = directive.args; _i6 < _directive$args2.length; _i6++) {
          var arg = _directive$args2[_i6];
          collectReferencedTypes(arg.type, allReferencedTypes);
        }
      }
    }

    collectReferencedTypes(__Schema, allReferencedTypes); // Storing the resulting map for reference by the schema.

    this._typeMap = Object.create(null);
    this._subTypeMap = Object.create(null); // Keep track of all implementations by interface name.

    this._implementationsMap = Object.create(null);

    for (var _i8 = 0, _arrayFrom2 = arrayFrom(allReferencedTypes); _i8 < _arrayFrom2.length; _i8++) {
      var namedType = _arrayFrom2[_i8];

      if (namedType == null) {
        continue;
      }

      var typeName = namedType.name;
      typeName || devAssert(0, 'One of the provided types for building the Schema is missing a name.');

      if (this._typeMap[typeName] !== undefined) {
        throw new Error("Schema must contain uniquely named types but contains multiple types named \"".concat(typeName, "\"."));
      }

      this._typeMap[typeName] = namedType;

      if (isInterfaceType(namedType)) {
        // Store implementations by interface.
        for (var _i10 = 0, _namedType$getInterfa2 = namedType.getInterfaces(); _i10 < _namedType$getInterfa2.length; _i10++) {
          var iface = _namedType$getInterfa2[_i10];

          if (isInterfaceType(iface)) {
            var implementations = this._implementationsMap[iface.name];

            if (implementations === undefined) {
              implementations = this._implementationsMap[iface.name] = {
                objects: [],
                interfaces: []
              };
            }

            implementations.interfaces.push(namedType);
          }
        }
      } else if (isObjectType(namedType)) {
        // Store implementations by objects.
        for (var _i12 = 0, _namedType$getInterfa4 = namedType.getInterfaces(); _i12 < _namedType$getInterfa4.length; _i12++) {
          var _iface = _namedType$getInterfa4[_i12];

          if (isInterfaceType(_iface)) {
            var _implementations = this._implementationsMap[_iface.name];

            if (_implementations === undefined) {
              _implementations = this._implementationsMap[_iface.name] = {
                objects: [],
                interfaces: []
              };
            }

            _implementations.objects.push(namedType);
          }
        }
      }
    }
  }

  var _proto = GraphQLSchema.prototype;

  _proto.getQueryType = function getQueryType() {
    return this._queryType;
  };

  _proto.getMutationType = function getMutationType() {
    return this._mutationType;
  };

  _proto.getSubscriptionType = function getSubscriptionType() {
    return this._subscriptionType;
  };

  _proto.getTypeMap = function getTypeMap() {
    return this._typeMap;
  };

  _proto.getType = function getType(name) {
    return this.getTypeMap()[name];
  };

  _proto.getPossibleTypes = function getPossibleTypes(abstractType) {
    return isUnionType(abstractType) ? abstractType.getTypes() : this.getImplementations(abstractType).objects;
  };

  _proto.getImplementations = function getImplementations(interfaceType) {
    var implementations = this._implementationsMap[interfaceType.name];
    return implementations !== null && implementations !== void 0 ? implementations : {
      objects: [],
      interfaces: []
    };
  } // @deprecated: use isSubType instead - will be removed in v16.
  ;

  _proto.isPossibleType = function isPossibleType(abstractType, possibleType) {
    return this.isSubType(abstractType, possibleType);
  };

  _proto.isSubType = function isSubType(abstractType, maybeSubType) {
    var map = this._subTypeMap[abstractType.name];

    if (map === undefined) {
      map = Object.create(null);

      if (isUnionType(abstractType)) {
        for (var _i14 = 0, _abstractType$getType2 = abstractType.getTypes(); _i14 < _abstractType$getType2.length; _i14++) {
          var type = _abstractType$getType2[_i14];
          map[type.name] = true;
        }
      } else {
        var implementations = this.getImplementations(abstractType);

        for (var _i16 = 0, _implementations$obje2 = implementations.objects; _i16 < _implementations$obje2.length; _i16++) {
          var _type = _implementations$obje2[_i16];
          map[_type.name] = true;
        }

        for (var _i18 = 0, _implementations$inte2 = implementations.interfaces; _i18 < _implementations$inte2.length; _i18++) {
          var _type2 = _implementations$inte2[_i18];
          map[_type2.name] = true;
        }
      }

      this._subTypeMap[abstractType.name] = map;
    }

    return map[maybeSubType.name] !== undefined;
  };

  _proto.getDirectives = function getDirectives() {
    return this._directives;
  };

  _proto.getDirective = function getDirective(name) {
    return find(this.getDirectives(), function (directive) {
      return directive.name === name;
    });
  };

  _proto.toConfig = function toConfig() {
    var _this$extensionASTNod;

    return {
      description: this.description,
      query: this.getQueryType(),
      mutation: this.getMutationType(),
      subscription: this.getSubscriptionType(),
      types: objectValues(this.getTypeMap()),
      directives: this.getDirectives().slice(),
      extensions: this.extensions,
      astNode: this.astNode,
      extensionASTNodes: (_this$extensionASTNod = this.extensionASTNodes) !== null && _this$extensionASTNod !== void 0 ? _this$extensionASTNod : [],
      assumeValid: this.__validationErrors !== undefined
    };
  } // $FlowFixMe[unsupported-syntax] Flow doesn't support computed properties yet
  ;

  _createClass(GraphQLSchema, [{
    key: SYMBOL_TO_STRING_TAG,
    get: function get() {
      return 'GraphQLSchema';
    }
  }]);

  return GraphQLSchema;
}();

function collectReferencedTypes(type, typeSet) {
  var namedType = getNamedType(type);

  if (!typeSet.has(namedType)) {
    typeSet.add(namedType);

    if (isUnionType(namedType)) {
      for (var _i20 = 0, _namedType$getTypes2 = namedType.getTypes(); _i20 < _namedType$getTypes2.length; _i20++) {
        var memberType = _namedType$getTypes2[_i20];
        collectReferencedTypes(memberType, typeSet);
      }
    } else if (isObjectType(namedType) || isInterfaceType(namedType)) {
      for (var _i22 = 0, _namedType$getInterfa6 = namedType.getInterfaces(); _i22 < _namedType$getInterfa6.length; _i22++) {
        var interfaceType = _namedType$getInterfa6[_i22];
        collectReferencedTypes(interfaceType, typeSet);
      }

      for (var _i24 = 0, _objectValues2 = objectValues(namedType.getFields()); _i24 < _objectValues2.length; _i24++) {
        var field = _objectValues2[_i24];
        collectReferencedTypes(field.type, typeSet);

        for (var _i26 = 0, _field$args2 = field.args; _i26 < _field$args2.length; _i26++) {
          var arg = _field$args2[_i26];
          collectReferencedTypes(arg.type, typeSet);
        }
      }
    } else if (isInputObjectType(namedType)) {
      for (var _i28 = 0, _objectValues4 = objectValues(namedType.getFields()); _i28 < _objectValues4.length; _i28++) {
        var _field = _objectValues4[_i28];
        collectReferencedTypes(_field.type, typeSet);
      }
    }
  }

  return typeSet;
}